In preparation for the Dubai Duty Free Men's Open, tennis legend Photo d'actualité - Getty Images

In preparation for the Dubai Duty Free Men's Open, tennis legend Andre Agassi of the USA and the World's No. 1 Roger Federer of Switzerland, couldn't resist the temptation to have a friendly 'hit' on Obtenez des photos d'actualité haute résolution de qualité sur Getty Images

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In preparation for the Dubai Duty Free Men's Open, tennis legend Photo d' actualité - Getty Images

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In preparation for the Dubai Duty Free Men's Open, tennis legend Photo d' actualité - Getty Images

In preparation for the Dubai Duty Free Men's Open, tennis legend Photo d' actualité - Getty Images

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In preparation for the Dubai Duty Free Men's Open, tennis legend News Photo - Getty Images

In preparation for the Dubai Duty Free Men's Open, tennis legend Photo d' actualité - Getty Images

In preparation for the Dubai Duty Free Men's Open, tennis legend News Photo - Getty Images

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